PLATE II, =/© 
Fic. 3.—Cross section of stem, showing one year’s growth: e, epi- 
dermis, with the cuticle represented by the outer black circle; p, palisade; 
y, thin-walled parenchyma of primary cortex; n, pericycle; d, endodermis, 
a, bast fibers; 0, phloém; x, xylem; 7, medullary ray; m, medulla.  X 78. 
Fic. 4.—Cross section of secondary root: s, brown scaly cork; g, cork, 
the cells filled with reddish-brown coloring matter; v, phellogen; 1, thin- 
walled parcenchyma; f, phloém; w, xylem; u, cambium. x 10. 
Fic. 5.—Small portion of stem: c, cambium; t, tracheids; 7, medullary 
ray. xX 475. 
Fic. 6.—Bast fibers, and parenchyma of the pericycle of stem. » 325. 
Fic. 7.—Tracheid from stem. X 325. 
